Cortland County's 2026 population is estimated at 45,921, reflecting a -0.03% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Cortland County is the 51st largest county in New York. The 2010 population was 49,277 and has grown -6.81% since 2010.
Data after 2023 is projected based on recent change
Overall: 37 years
Female: 36.8 years
Male: 37.2 years
There are 37,699 adults, (7,929 of whom are seniors) in Cortland County.
Female: 23,299 (50.4%)
Male: 22,947 (49.6%)
The racial composition of Cortland County includes 89.97% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 41,609 | 89.97% |
| Two or more races | 2,539 | 5.49% |
| Black or African American | 861 | 1.86% |
| Asian | 656 | 1.42% |
| Other race | 550 | 1.19% |
| Native American | 27 | 0.06% |
| Native Hawaiian or Pacific Islander | 4 | 0.01% |
Cortland County 's average per capita income is $49,109. Household income levels show a median of $70,418. The poverty rate stands at 12.76%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $103,149 | $116,378 |
| Families | $88,091 | $104,261 |
| Households | $70,418 | $85,337 |
| Non Families | $41,392 | $54,119 |
Average Income
Median Household Income
Poverty Rate
